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解决方案

Timing simulations in Xilinx M1 or later use the simprim (simulation primitive)library to model routed designs. For Mentor Graphics, these simulationmodels are located in the $SIMPRIMS library. The $SIMPRIMS variable istypically set to $LCA/simprims.

The EDIF file that PLD_EDIF2TIM is processing should reference thissimulation library as "$SIMPRIMS". However, in this situation, the libraryis referenced as simply "SIMPRIMS" (without the dollar sign). This causesENRead (the Mentor EDIF reader that PLD_EDIF2TIM runs) to look in thecurrent directory for a SIMPRIMS subdirectory where it expects to find thelibraries.

To correct this, the EDIF file must be rewritten to reference the simprimlibrary as $SIMPRIMS. This is done with the vendor setting in NGD2EDIF: